Patent TW-254987-B (TW)
Title: Process of spraying cement slurry and its device
Inventor: WU JIANG-SU
IPC: E04F21/08
Filed: 1994-03-24
Granted: 1995-08-21
Abstract: A process of spraying cement slurry and its device, which mainly comprises buffer bottle, main slurry transport pipe, rubber ball type connector, infusion slurry connector, main turnaround slurry pipe, main air pipe and slurry spraying gun; in which the buffer bottle: the bottom of buffer bottle is installed with plate connector and connects with the slurry transport pipe of a pump car in which the interior of the buffer bottle is a hollow air drum and the other side is installed with another plate connector and connected with the main slurry transport pipe so that the air drum is used to reduce the impact during slurry transport; the main slurry transport pipe: the main slurry transport pipe is a seamless iron pipe in which each section uses rubber ball type connector and slurry infusion connector to connect with the main slurry transport pipe; the rubber ball type connector: the top and bottom of rubber ball type connector separately has a plate connector, and the middle section has a hollow rubber ball which is mainly used to reduce the shock and pressure expansion during slurry expansion by the elasticity of the rubber ball to prevent the main slurry transport pipe from breaking; the slurry infusion connector: the top and bottom of slurry infusion connector separately has a plate connector, and its top end is connected to another section of main slurry transport pipe, its bottom end is connected to the top end of the rubber ball type connector, the interior of the slurry infusion connector is installed with a slurry infusion branch pipe in which its slurry inlet is an oblique opening of flaring shape for the convenience of slurry infusion, the slurry infusion branch pipe is connected to the inner end of valve gate on its outside so that when the valve gate is closed the slurry can be stopped from entering, and the outer end of the valve gate is connected to an auxiliary slurry transport pipe; the main turnaround slurry pipe: the main turnaround slurry pipe is a plastic spring pipe in which one end is connected to the end section of the main slurry transport pipe and each section of the turnaround slurry pipe is connected in a twisted way, each construction floor uses an auxiliary turnaround slurry pipe to connect a waste slurry treatment tank to process the fallen waste slurry, or the main turnaround slurry pipe uses sectionwise way to let the turnaround slurry falling into the waste slurry treatment tank, and the main turnaround slurry pipe is connected to the auxiliary slurry transport pipe and valve door of the front section of the slurry spraying gun so that the cement slurry also forms a loop on the construction floor; the air pipe: one end of the air pipe is connected to an air compressor, and the other end is connected to a three-way connector to supply air to a pair of auxiliary air pipe and a slurry spraying gun; the slurry spraying gun: the slurry spraying gun is installed with two sets of air nozzles in which the injection air enters in a tangential direction so that the cement slurry will spray out spirally in order to make the cement easier to attach on the net surface; when the cement truck arrives at the operation side, the cement was poured into the slurry transport tank of the pump car; after sieving out sands and impurities with diameter larger than 0.2 cm by a vibration sieve, the cement slurry was transported from the main slurry transport pipe to each slurry infusion connector to distribute the cement slurry to the auxiliary slurry transport pipe and slurry spraying gun on each construction floor, and the connector of each section of the auxiliary slurry transport pipe on each construction floor may be installed with a light car for the convenient of movement of each auxiliary slurry transport pipe to prevent wearing and breaking of the auxiliary slurry pipe, and each construction floor is installed with a waste slurry treatment tank so that the waste slurry can be poured into the tank and be recycled to the main turnaround slurry pipe, and the main turnaround slurry pipe is connected to the pump car in a twisted way to reduce the slurry turnaround speed and prevent the slurry turnaround pipe from breakage, and the cement slurry circulated in the main slurry transport pipe, the main turnaround pipe and the auxiliary slurry transport pipe.